[Bug target/78093] [avr] Introduce new variable attribute "absdata" to enable LDS / STS on Reduced Tiny

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78093

--- Comment #2 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Mon Nov 14 10:25:34 2016
New Revision: 242379

URL: https://gcc.gnu.org/viewcvs?rev=242379&root=gcc&view=rev
Log:
gcc/
        PR target/78093
        * doc/invoke.texi (AVR Options) [-mabsdata]: Document new option.
        * config/avr/avr.opt (-mabsdata): New option.
        * config/avr/avr-arch.h (avr_device_specific_features): Add
AVR_ISA_LDS.
        * config/avr/avr.c (avr_encode_section_info) [AVR_TINY]: If
        -mabsdata & symbol is not progmem, tag as AVR_SYMBOL_FLAG_TINY_ABSDATA.
        * config/avr/avr-mcus.def (attiny4/5/9/10/20): Use AVR_ISA_LDS.
        * config/avr/gen-avr-mmcu-specs.c (print_mcu): Print cc1_absdata
        spec depending on AVR_ISA_LDS.
        * config/avr/specs.h (CC1_SPEC): Enhanced by cc1_absdata spec.
gcc/testsuite/
        PR target/78093
        * gcc.target/avr/torture/tiny-absdata-2.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/avr/torture/tiny-absdata-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/avr/avr-arch.h
    trunk/gcc/config/avr/avr-mcus.def
    trunk/gcc/config/avr/avr.c
    trunk/gcc/config/avr/avr.opt
    trunk/gcc/config/avr/gen-avr-mmcu-specs.c
    trunk/gcc/config/avr/specs.h
    trunk/gcc/doc/invoke.texi
    trunk/gcc/testsuite/ChangeLog